He added: "Babies, like Harvey, receiving this treatment are placed onto a special cooling mattress which is filled with fluid that can be cooled or warmed according to the baby's needs.

"This is a specialist treatment that lowers the baby's normal body temperature from 37.0C to 33.50C to aid with the healing process of the brain. "The temperature is monitored closely to ensure that it stays at the target temperature for 72 hours before a gradual re-warming process occurs.

"Studies have shown this new treatment can prevent long-term brain damage as it allows time for the brain to recover as the brain processes slow down."